Apparatus for analyzing gas



A. RODHE. APPARATUS FOR ANALYZING GAS.

APPLICATION FILED JAN.29, 1917.

Patented Apr. 12, 1921.

Inventor- Jilin rn edgy UNITED STATES PATENT omen.

OLOF RODI-IE, OF STOGKHOLM, SWEDEN, ASSIGNOR TO AKTIEBOLAGET INGENICiRS-FIRMA FRITZ EG'N'ELL, OF STOCKHOLM, SWEDEN.

APPARATUS .FOR ANALYZING- GAS.

Specification of Letters Patent.

Patented Apr. 12, 1921.

Application filed January 29, 1917. Serial 'No. 145,205.

To all whom it may concern:

Be it known that I, OLOF Ronnn, subject of the King of Sweden,residingat Rorstrandsgatan 30, Stockholm, have invented certain new anduseful Improvements in Apparatus for Analyzing Gas, of which thefollowing is a specification.

This invention relates to an improved method of and apparatus foranalyzing gas.

The invention consists in that the velocity of the gas current isdiminished during a gas analysis where the gas or its parts are to bechemically or physically transformed or where one or more parts are tobe removed or where the temperature or the percentage of moisture is tobe altered. In thls manner the time that is necessary for thetransformation of the gas or its parts will be gained.

The streaming of the gas is preferably retarded before the gas hasreached the usual first measuring receptacle, which can be effected byarranging a contraction in one of the piping connections. Thiscontraction may be arranged in the gas inlet pipe or in the inlet or thedischarge pipe for the pressure medium that effects the movement of thegas.

Some embodiments of the invention are shown in Figures 1-5 of theaccompanying drawings, in connection with different gas analyzingapparatus of usual constructions.

In the embodiment according to Fig. 1 the reference letter 6 indicatesthe first measuring receptacle in which a liquid is caused to rise andfall by means of the receptacle c that forms part of a pumping apparatusaccording to the British Patent No. 16561 of 1908. The references (Z and6 indicate liquid seals, 7 shows an ascending pipe, 9 an absorptionreceptacle, and h an inlet pipe for the gas to be analyzed. The pipings2' and i are used to convey the medium that drives the pump. The liquidreaches the measuring receptacle I) through the pipe is.

The contraction may be arranged at a, a a ai or a that is in thedischarge piping z' for the driving medium, in the dlscharge Pipingoutlet directly into the ascending pipe f, in the inlet piping h for thegas, in the inlet piping 76, for the liquid or in the ascending pipe tothe receptacle 0. The effect wlll be the same in all these cases namelythe retard- Z that in some embodiments has its ing of the gas current.In this embodiment pumpmg'liquid introduced into the system by pipe 2'will rise in pipe k and receptacle Z), receptacle 0 and stand pipe f,thus driving a charge of gas from the receptacle 6 through the waterseal 6 into absorption chamber 9. When the pumping liquid has risen tothe top of the vessel 0, 1t Wlll overflow, and by siphonic action thepumping liquid throughout the system will be reduced to a predeterminedlevel whereby a measured quantity of gas will be drawn into receptacle 6through pipe h and water seal cl. The operation then proceeds as before.

Fig. 2 shows another embodiment, in which the piping c has its outletdirectly into the measuring receptacle 6. The contraction may bearranged in the pipe 6 at a or in the pipe 70 at a as shown in Fig. 1.

Fig. 3 shows another embodiment in which the pipe 6 has its outlet intothe measuring receptacle 6. The contraction may, as in Fig. 2, bearranged at a In the embodiment according to Fig. 1 a gas dischargepiping Z has its outlet into the measuring receptacle Z) that consistsof two communicating vessels. The contraction a or a may, as in Figs. 2or 3, be arranged in the pipes c, e or is.

In the embodiment according to Fig. 5, the measuring receptacle 6 isconnected by means of the pipe 1 0 with the receptacle 1?. Water or someother driving medium enters through the pipe m, thus increasing thepressure in the said receptacle 4%. This increase of pressure istransmitted to the receptacle p but will also cause the liquid in thepipe 9" to rise. The liquid in 7a and b will also rise simultaneously.When the pipe 9 is filled, it will act as a siphon and the predominatingpressure in 0 and 39 will accordingly be equalized. The liquid thusfalls in is and b. In this embodiment the contraction may be arranged inthe pipe r, for example at a whereby the advantage is gained that thepredominating pressure in 79 only decreases comparatively slowly andaccordingly also the liquid in k falls slowly, so that the gas is onlyslowly drawn in through h.

In the embodiments shown the contraction has always been mentioned asstation ary, but it may also be suitable to make the contraction movableor connect it by means of a branch piping or in some other way.

A similar arrangement will be of use if an apparatusis to be used fordifferent purposes and intermittently with and without contraction. Thecontraction may also be made adjustable for example by making the crosssection of the pipe variable. It is also possible to arrange severalcontractions in one pipe or in different pipes.

Claims. 1 p 1. In a gas analyzing apparatus in which gasis physically orchemically transformed,

a pump, a measuring vessel, fluid piping communicating with said pumpand said vessel, and contraotlons in portions of sand pip ' in presenceof two witnesses.

2. In a gas analyzing apparatus in which gas is physically or chemicallytransformed, a pump, a measuring vessel, an absorbing chamber, fluidpiping connecting said pump, said vessel and said chamber, andcontractions in-said pipe in advance of said pump, intermediate saidpump and said vessel and intermediate said pump and said chamber.

In testimony whereof I afiix my signature OLOF RODHE.

I Witnesses GRETA PRIEN, ELIN 'WAHMAN.

